邻苯二酚紫——CTMAB光度法测定微量锡

A Spectrophotometric Method of The Determination of Trace Tin Based on The Reaction of Tin(IV) with Pyricatechol Violet in The Presence of CTMAB

通过对干扰离子的影响及其消除方法的研究,提出了适用于高合金钢中的以邻苯二酚紫-溴化十六烷基三甲基胺光度法测定微量锡的分析方法。锡(IV)浓度在2.5μg/25ml～40μg/25ml范围内遵守比尔定律,用于高合金钢标样中微量锡的测定获得满意的结果。

The effect of foreign ins and the their elimination was also studied in the paper. A spec-trophotometric method of the determination of trace tin was developed based on the reaction of tin (IV) with Pyrocatechol Violet in the presence of Cety Trimethylammonium Bromide(CTMAB) in high alloy steel. The concentration range of tin(IV) obeying Beer's law is 2. 5 μg/25 ml^40μg/ 25 ml. When it is used for the determination of tin in high alloy steel reference sample , satisfactory results are obtained.